Hackers Add New Naplistener Backdoor to Arsenal, Impact on Cybersecurity? Altus Intel Altus Intel Altus Intel 28 Mar 2023 6:00 am GMT+0000 Date Time Share Elastic Security Labs security researchers found that Ref2924 grouped from espionage to constant access inside target networks. Recently, hackers added a new backdor called naplistener to their arsenal.According to References /Reports, release notes, official announcements.